The MIL-DTL-38999 Series II connectors boast exceptional durability and performance in harsh environments, with up to 128 contacts housed in an insert for robust connectivity. These circular receptacles, featuring various mounting options including front and rear wall mount, jam nut, and box mount configurations, are meticulously designed to meet stringent military specifications. Operating flawlessly in temperatures ranging from -65 °C to 200 °C, they offer reliable functionality in extreme conditions. Crafted from aluminum with a choice of plating options, such as electroless nickel and cadmium finishes, these connectors ensure long-term reliability and corrosion resistance. With RoHS-compliant alternatives available, they cater to diverse application needs, making them a preferred choice for demanding environments requiring secure and efficient electrical connections.